Patent application number | Description | Published |
20080302719 | SPIRAL MEMBRANE ELEMENT AND METHOD OF PRODUCING THE SAME - A spiral membrane element that can reduce the dimension increase in the length direction is provided by forming a fiber reinforced resin layer having a reinforcing fiber layer and a strengthening fiber layer. Also, a method for producing a spiral membrane element is provided having a step of forming a fiber reinforced resin layer having a reinforcing fiber layer and a strengthening fiber layer. The spiral membrane element is provided with a cylindrical wound body in which a separation membrane, a feed-side channel material, and a permeate-side channel material in a laminated state are wound in a spiral form around a center tube having a hole, and a sealing part for preventing feed-side fluid and permeate-side fluid from being mixed with each other, wherein a fiber reinforced resin layer having a reinforcing fiber layer and a strengthening fiber layer enclosed and buried with the same resin is provided on an outer circumferential side of the cylindrical wound body. | 12-11-2008 |
20090026130 | SPIRAL MEMBRANE ELEMENT AND PROCESS FOR PRODUCING THE SAME - An object of the present invention is to provide a spiral membrane element that can form a uniform fiber reinforcement layer on an outer circumferential surface by a simple process without a great change in the materials, as well as a process for producing the same. The spiral membrane element of the present invention is a spiral membrane element which is provided with a cylindrical roll R in which a separation membrane, a feed-side flow passageway member, and a permeate-side flow passageway member | 01-29-2009 |
20090065426 | SPIRAL MEMBRANE ELEMENT - An object of the present invention is to provide a spiral membrane element that can improve the barrier property of a fiber reinforced plastic layer having a fiber roll as a reinforcing phase and that can effectively prevent occurrence of cracks. The spiral membrane element of the present invention is a spiral membrane element containing a cylindrical roll R in which a separation membrane, a feed-side flow passageway member, and a permeate-side flow passageway member are spirally wound in a laminate state around a perforated center tube | 03-12-2009 |
20090095670 | MEMBRANE ELEMENT SEALING MATERIAL HOLDING MEMBER AND MEMBRANE ELEMENT - A membrane element sealing material holding member that even when the dimension of outer diameter of center tube varies, enables holding of the center tube in the center and further enables easy insertion of the center tube; and a membrane element utilizing the same. The membrane element sealing material holding member comprises central opening ( | 04-16-2009 |
20090277825 | SPIRAL MEMBRANE MODULE - A spiral membrane module where membrane elements are easily connected to each other and the connection thereof is prevented from being loosened. The spiral membrane elements ( | 11-12-2009 |
20100096316 | SPIRAL TYPE SEPARATION MEMBRANE ELEMENT - An object of the invention is to provide a spiral separation membrane element that can reduce the pressure loss of a feed-side channel and be much less vulnerable to the problem of inhibition or blockage of the flow in the feed-side channel. The spiral separation membrane element includes one or more separation membranes, one or more feed-side channel components, one or more permeation-side channel components, and a perforated hollow core tube around which the separation membranes, the feed-side channel components and the permeation-side channel components are wrapped, wherein the feed-side channel component is a net formed by fusion bonding. | 04-22-2010 |
20100108593 | SPIRAL TYPE SEPARATION MEMBRANE ELEMENT - An object of the invention is to provide a spiral separation membrane element that can reduce the pressure loss of a feed-side channel and be much less vulnerable to the problem of inhibition or blockage of the flow in the feed-side channel. The spiral separation membrane element includes one or more separation membranes, one or more feed-side channel components, one or more permeation-side channel components, and a perforated hollow core tube around which the separation membranes, the feed-side channel components and the permeation-side channel components are wrapped, wherein the feed-side channel component is a net formed by fusion bonding. | 05-06-2010 |
20100178489 | COMPOSITE SEMIPERMEABLE MEMBRANE - It is an object of the present invention to provide a composite semipermeable membrane having an excellent resistance property to contamination, particularly an excellent resistance property to microbial contamination, and a water treatment method using the composite semipermeable membrane. The present invention relates to a composite semipermeable membrane comprising a skin layer formed on the surface of a porous support and containing a polyamide-based resin obtained by reacting a polyfunctional amine component with a polyfunctional acid halide component, wherein an antibacterial layer containing a silver-based antibacterial agent and a polymer component is formed on the skin layer directly or with other layer interposed therebetween, and the weight ratio between the silver-based antibacterial agent and the polymer component in the antibacterial layer is 55:45 to 95:5 (silver-based antibacterial agent:polymer component). | 07-15-2010 |
20100320143 | COMPOSITE SEMIPERMEABLE MEMBRANES AND PROCESS FOR PRODUCTION THEREOF - It is an object of the present invention to provide a process for producing, easily and at a low cost, a composite semipermeable membrane having excellent contamination resistance, especially microbial contamination resistance, and a composite semipermeable membrane produced by the process. The process for producing a composite semipermeable membrane of the present invention comprises forming a skin layer including a polyamide resin obtained by a reaction between a polyfunctional amine component and a polyfunctional acid halide component on the surface of a porous support; forming a polymer layer (A) including a silver salt compound on the skin layer directly or through other layers; and reducing the silver salt compound to precipitate metal silver in the polymer layer (A) and/or on the surface thereof. | 12-23-2010 |
20100326901 | PRESSURE VESSEL FOR MEMBRANE ELEMENT, MEMBRANE FILTRATION APPARATUS EQUIPPED WITH THE PRESSURE VESSEL FOR MEMBRANE ELEMENT, AND METHOD FOR MANUFACTURING MEMBRANE FILTRATION APPARATUS - Provided are a pressure vessel for a membrane element in which the membrane element can be easily mounted, a membrane filtration apparatus equipped with the pressure vessel for a membrane element, and a method for manufacturing a membrane filtration apparatus. A rail (protrusion) | 12-30-2010 |
20110000844 | CONNECTION MEMBER AND SEPARATION MEMBRANE MODULE USING THE SAME - Provided are a connection member capable of preventing leakage from a supply side to a permeating side from occurring by a simple means; and a separation membrane module using the connection member. The connection member ( | 01-06-2011 |
20130087499 | SPIRAL SEPARATION MEMBRANE ELEMENT, PERFORATED HOLLOW TUBE, AND METHOD OF PRODUCING THE SAME - The spiral separation membrane element of the present invention includes: a perforated hollow tube ( | 04-11-2013 |
20130186819 | SEPARATION MEMBRANE MODULE - A separation membrane module ( | 07-25-2013 |
20130299416 | SPIRAL SEPARATION MEMBRANE ELEMENT - A spiral separation membrane element ( | 11-14-2013 |
20140183126 | END MEMBER FOR SPIRAL SEPARATION MEMBRANE ELEMENT, SPIRAL SEPARATION MEMBRANE ELEMENT AND SEPARATION MEMBRANE MODULE - An end member ( | 07-03-2014 |